The Invincible Overlord of Heroes.

The Hell Army consumed Graycastle's ammunition reserves throughout the day.

The purpose is to ensure that when Hell launches a real attack, Graycastle's catapults will not have enough reserves to saturate their output.

At the same time, it is also to be able to determine the specific location of the Graycastle catapult based on the impact point and flight arc.

Catapults, especially those carried to the city walls, are generally fixed and difficult to move.

After determining the exact location of the catapults, Hell can choose to send troops to attack these catapults and destroy them directly.

At the very least, determining the location of these catapults would allow us to determine their optimal attack range and projection angle.

No matter how long the attack distance of any slingshot is, there is a certain angle at which it cannot reach its target. This is determined by the structure of the machine.

Of course, the designers of the city defense had already thought of this problem.

Therefore, there are usually at least four catapults on the city walls to ensure that there are no blind spots, at least except for the section at the foot of the city.

The catapults on the city wall are better. At least no matter how sudden the crypt demon’s attack is, it can’t fly onto the city wall.

However, the catapults placed behind the city wall have a high probability of being attacked by the crypt demons.

Night is about to fall, and even if all the magic lights in the city are lit, there are still many dark corners that cannot be illuminated.

Xu Lai arranged enough soldiers to patrol the city, as well as special scouts to listen.

But Xu Lai had never dealt with demons like the Crypt Demon while defending the city.

And after all, this is a world of magic. We don't know whether there will be any sound when passing through underground. Even if there is, it may be covered up with magic.

The devil remained motionless during the day, waiting for the best time to act at night.

Xu Lai was almost 100% sure that the group of subterranean demons would take action tonight.

Xu Lai had already selected the targets for the operation. During the day, he built more than ten catapult positions in the inner city.

This catapult position built inside the city wall does not have the range bonus of the city wall and has no advantage over the demon's catapult.

In fact, because it cannot see the target and can only attack according to instructions, its hit rate is much worse than that of an ordinary catapult.

But if the demon troops are densely packed, it doesn't matter if the hit rate is a little off, because you will hit the demons anyway.

The devil created so many mirror images and fake devils, isn't it just to consume his own ammunition?

Xu Lai didn't believe that the demons would not be interested if he had set up so many catapult positions and only arranged a small number of soldiers to defend them.

Completely different from the devil's guess, Xu Lai would not cherish any ammunition or catapult.

In addition to the high-end goods sent to the city walls, with Qingfeng City's capabilities, it would not be a problem to build hundreds of ordinary catapults a day.

It's just that the craftsmen in Qingfeng City have to work harder and the workers have to carry things more often.

Therefore, Xu Lai also specifically instructed the defending soldiers to pay attention to the movements underground at all times, and to give priority to protecting themselves if anything went wrong, and not to worry about the catapults.

These catapults are the traps Xu Lai prepared for the demons.

A large number of woven nets and freezing traps were laid in the catapult position.

Because of its own characteristics and those of the demon race, the crypt demon has a strong resistance to fire and earth elemental magic.

The most common traps such as fire and ground spikes are not very effective against the crypt demons, but they may be able to paralyze these demons.

The purpose of woven webs and freezing traps is not to kill these crypt demons, but to trap them and not give them time to bury themselves again.

As long as these crypt demons are caught in the net or frozen, the troops arranged by Xu Lai will immediately attack them.

Crypt Fiends are good at sneak attacks, and attacking from behind can cause double damage.

But their frontal capabilities are only slightly stronger than those of the Winged Demons.

In order to be able to sneak underground smoothly, they cannot wear any equipment.

Except for a few leader-level Crypt Lords who have specially crafted exclusive equipment, the rest of the Crypt Demons have naked attributes.

The only thing that makes them stronger than winged demons is that they don't need to limit their own weight, so they can carry heavy shells on their backs and grow sharp dorsal spines.

But even though Xu Lai had made sufficient preparations, he still miscalculated, as the crypt demon did not appear the entire night.

Not only the crypt demons, but also the demons outside the city are also very powerful, but in fact they are just two or three kittens.

When a flare was thrown into the air, countless dark demons could be seen pouring in from the battlefield seven or eight kilometers away.

However, mirror images are not easy to distinguish, and even in daytime with good visibility, they still require the help of light and shadow.

At night when visibility is poor, even with flares, it is difficult to tell whether it is a mirror image or a real demon.

But Xu Lai didn't need to save ammunition anyway. Nearly a hundred catapults, trebuchets and catapults on and under the city walls were launched at the same time.

There is a turret on the Graycastle, but Xu Lai cannot add it right away because the most important magic cannon on the turret needs a high-level alchemist to make it.

Xu Lai has already ordered several cannons from Qingfeng City, but even if the cannons are available, it will take craftsmen two or three days to build a new turret.

The turrets currently in use are still the ones that were repaired previously.

These turrets can fire shells made of a large number of iron balls, which are not only powerful but also able to scatter.

The disadvantage is that the previous magic cannons were all extremely ordinary stuff.

Not to mention compared with the cannons used by the tower mages, it can't even compare with the ordinary naval guns on Xu Lai's fleet.

The power is decent, but the range is only one kilometer. Even with the dual support of ballistics and archery, the range is less than 1.5 kilometers.

In the darkness of the night, Xu couldn't see clearly whether the demon was broken into pieces or blasted into ashes.

Anyway, every round of catapult fire can kill at least thousands of demons.

The demons' movement speed is not slow. I believe that in addition to logistics skills, Kerrigan also has other treasures that can increase the speed.

At a distance of seven or eight kilometers, the demon infantrymen appeared within the range of the phantom shooters after just a few rounds of bombing.

With the bonus of strengthened arrow towers, the phantom archers, who already had a very wide range, took the lead in launching a powerful long-range offensive.

Thousands of arrows, with tens of thousands of phantoms, appeared in the sky continuously, almost forming a straight line.

Whether it is the Hellfire summoned by Kerrigan using the Hell's Gate, the Horned Warlord, or the mirror image copied using the Mirror Technique.

When they walked into the attack range of the Phantom Archer, it was like encountering a wall formed by arrows, and no one could break through.

One Hellfire after another was blasted into pieces by the powerful arrows.

According to the demons' previous experience, the human archers' projectiles can indeed reach a long distance, but their power is extremely average.

The Longbow Regiment hero defending Lionheart City not only possesses the ultimate archery skills, but also has the archer specialty and is equipped with a complete archer suit.

When these three items are added together, even the shooters led by Xu Lai are far from comparable to the opponent in terms of range or output.

But the damage caused by Lionheart City's archers was less than half of that of Phantom Archers, even though they outnumbered Phantom Archers. No matter how strong the Lionheart City's defenders were, after all, projectiles only did a quarter of the damage.

No matter how high, strong, and powerful the capital's city walls and arrow towers were, their power was reduced by three quarters in an instant. How could they still be of much power?

The Phantom Archer not only has full damage, but also receives the same bonus from the Arrow Tower, and can also bring more phantom arrows based on its own level.

The average level of Xu Lai's phantom archers is almost level 8, which means that each phantom archer can shoot an additional 8 arrows.

The phantom arrows are not full, but the demons have eliminated only one-tenth of their troops, and the remaining nine-tenths are either mirror images or cannon fodder.

Mirror images cannot withstand any damage. Cannon fodder, whether they are enslaved humans, little demons, or little jumping demons, are all extremely fragile units.

If you shoot a phantom arrow at this kind of unit, you might be able to hit seven or eight of them.

Even if we maintain this kind of firepower configuration, it won't last long.

A Phantom Archer, even an 8th-level Phantom Archer, only has three quivers and 3 arrows.

With the special effects of archery and logistics, the amount of ammunition can be increased by 30%, which adds up to 156 rounds.

With the Phantom Shooter's terrifying firing rate and 156 rounds of ammunition, it can be finished in less than three minutes if you use it at the extreme limit.

Of course, considering the quality of the demon, there is no need to maintain such an exaggerated strength.

However, a Phantom Shooter will use up their daily free ammunition in ten minutes at most.

For the remaining time, Xu Lai would either provide ammunition supplies or arrange for them to rest.

A reinforced arrow tower with three layers of shooting positions can accommodate up to 12-18 archers shooting at the same time.

Xu Lai arranged three times the number of phantom archers in each arrow tower, allowing them to rotate at any time to ensure continuous output from the arrow tower.

Ten minutes later, seeing that the demons could not come up, Xu Lai ordered to reduce the intensity and release some demons appropriately.

Anyway, there are tens of thousands of sky archers on the city wall. If that is not enough, more archer masters can be mobilized.

After reducing the attack frequency, there would indeed be occasional Hellfires with thick skin and tough flesh that would break through the Phantom's defense line.

However, at this time, there were still 4 turrets and hundreds of crossbows on the city walls waiting for them.

Under the blockade of turrets and crossbows, these fish that escaped the net could not get within one kilometer.

Helplessly, Xu Lai could only order to lower the frequency again, allowing the phantom shooters to stop shooting and rest for two or three seconds.

But even so, because the demon army was filled with too many illusions, there were still not many left after breaking through the crossbow arrows and artillery fire.

There is no need to employ the Sky Shooters to deal with these demons. All we need to do is call on the new soldiers recruited after the founding of the country.

These new recruits followed Xu Lai all the way from the grassland to Graycastle, and were led by Lena to fight several tough battles and eat dragon meat.

Their levels at this time are not low anymore, the average level has exceeded level 5, and they are mainly level 5, supplemented by a small amount of level 6 and level 7.

They can fight the demons that break through the defense line at close range and carry out targeted strikes to gain experience.

Xu Lai took a quick look at the demons outside the city and lost interest, so he focused his attention inside the city.

However, there was less movement in the city. Apart from normal patrols, there was no other unusual activity.

The devil's actions at night were truly a lot of noise with little results, and Xu Lai didn't feel any pressure at all.

On the contrary, the demons themselves suffered some losses in their troops.

However, Kerrigan was not at all impatient. The loss of these demons was nothing to him. Moreover, most of them were summoned, so their deaths would be in vain.

All he had to do was take action without showing any signs of defeat, so that the demons under him would know that he was taking action.

The operations during the day and at night, in addition to consuming the ammunition of the defenders in the city, were more importantly to allow Kerrigan to have a basic assessment of human strength.

Just like that terrifying continuous rain of arrows.

Although he had heard reports before, he knew that Xu Lai had a very powerful long-range force.

But he didn't know how strong this army was.

Now he understood that with the help of the arrow tower, those archers could shoot nearly two kilometers away. The key power and speed were extremely terrifying.

If he didn't know the abilities of these archers and rashly concentrated his troops to attack, he would definitely suffer heavy losses.

Although the endless rain of arrows did not last long, Kerrigan knew that the enemy could definitely last as long as they had it.

Xu Lai must have an extremely large space ring, even of artifact level.

Therefore, Kerrigan dared to conclude that as long as Xu Lai was willing, this continuous rain of arrows would definitely last for a long time.

In addition to the human archers, Kerrigan was also concerned about Xu Lai's efforts in city defense.

After taking Lionheart with great effort, Kerrigan seized a large amount of wealth and a large population.

But these wealth and population cannot be used by him for the time being.

The key point is that he had no time to stop and sort out his internal affairs at this time, and most of the siege weapons he had accumulated for several months were lost in the Battle of Lionheart City.

Besides, he came back in such a hurry that it was impossible for him to bring those bulky things with him.

Briston had fought with Xu Lai before, and the city was broken, with only the inner city left.

Kerrigan removed all the catapults from the inner city walls of Briston and modified them into new catapults.

However, these twenty-odd catapults were now Cregan's treasures, and he was not willing to use them up easily to fight with Graycastle.

Only when the catapults and siege vehicles from Lionheart City are delivered, will he be able to use them to fight with Xu Lai.

Some time ago, Kerrigan saw Xu Lai's cavalry, and today he saw Xu Lai's city defense weapons and some of his archers.

Kerrigan stroked his chin and called off the attack before dawn.

His camp had already moved to the front line, only thirty kilometers away from Graycastle.

The Crypt Demons are a special force arranged by Kerrigan, and they must cooperate with the main force.

As for this surprise force, Kerrigan was not quite sure whether it could create such an effect.

The best outcome he hoped to achieve was to break through the two walls of Graycastle directly from the inside out.

Under the sudden attack, no matter how strong the human ranged troops are, it will be useless and they can only rely on melee defense.

If the crypt demons could open the two city gates directly, it would greatly facilitate Kerrigan's siege.

But if the crypt demons do not have this strength, Kerrigan will need to arrange for them to sneak attack the catapult positions, the granaries and arsenals, etc., to create chaos in the city.

What to do specifically and how to do it depends on the strength of human infantry.

So Kerrigan withdrew his troops but did not stop. After adjusting the formation, he continued to attack Graycastle the next day. (End of this chapter)